Tube beader or flanging machine



Dec, 16, 1924. 1 1,519,411

E. B. MINER TUBE BEADER 0R FLANGING MACHINE Filed Oct. 1923 Patented Dec. 16, 1924.

UNITED STATES EVERMONT BLEVINS MINER, OF PORTLAND, OREGON.

TUBE READER OR FLANGING MACHINE.

Application filed October 22, 1923.

To (all whom it may concern.

Be it known that EvERMoN'r BLEVINS MINER, a citizen of the United States, residing at Portland, in the county of Multnomah and State of Oregon, has invented certain new and useful Improvements in Tube Beaders or Flanging Machines, of which the following is a specification.

This invention pertains to tube beading or flanging machines, for use in sealing boiler tubes in boilers, and the present invention is an improvement upon my similar device patented June 20, 1922, under United States Letters Patent nmnbered 1320,3825.

The main object of the invention is to provide a simple, practical and eflicient machine of this kind, designed to turn the usual head or flange at the ends of boiler tubes, after the tubes have been properly positioned in the boiler.

In the drawing Figure 1 is a longitudinal section through the tool;

Fig. 2 is an elevation;

F ig. 3 is a transverse section on the line 3-3 in Fig. 1;

Fig. at is a transverse section on the line ett in Fig. 1;

Fig. 5 is a detail of one of the coil springs in ring like form used at both ends of the grips.

The invention comprises a rotatable shaft 1, which includes a handle end 2 screw threaded at 3, and a reduced working end 1 having a medial annular jaw bearing 5, and being screw threaded at its extremity 6 and also medially at 7. A jaw retaining ring 8 is fitted tightly onto the end of the part at and has a peripheral recess 9 formed therein. A retaining nut 10 is screwed onto the threaded end 6. Two semi-cylindrical gripping jaws 11 are mounted on the working end 41, the walls thereof being tapered from their relative thin outer ends 12 to their relative thick inner ends 13, having inwardly directed stops 15 and 16 adapted to seat upon the shoulders 5 and within the recess 9 respectively, and having circumferential grooves 17 formed at each end. Coil spring rings 18 are set in the grooves 17 and serve to hold the jaws 11 together, while at the same time permitting them to be expanded in use. An expanding plug 19 hav ing a threaded bore 20 is mounted by its bore 20 upon the threaded portion 7 of the working end, and this plug is tapered com- Serial No. 670,021.

plementally to meet the tapered walls of the jaws 11 and so as to maintain the outer surfaces of these jaws in approximate parallel relation. A round working head 21 is slidingly and rotatively mounted on the handle end 2 of the tool between the shoulder 5 and the threads 3, and has a depressed, circumferential, square-notched ratch 22 formed thereon. totatively mounted over this ratch is a handle ring 23 having the handle sockets 2-1 extended from opposite sides, with holes 25 piercing the bottoms of the sockets for access to the ratch 22. Working handles 26 are firmly set in the sockets 2 1. As shown in the drawing, this connection is made by means of a screw threaded joint 27. The handles 26 are recessed at their inner ends to form pawl sockets 28, and bores 29 are extended on out longitudinally through their ends. Spring set pawls 30 are slidingly mounted in sleeves 31. Stems 32 are joined to the sleeves 31 and adapted to slidingly and rotatively extend out through the bores 29, their outer extremities being threaded to engage the caps The pawl sleeves 31 are in turn slidingly and rotatively mounted in the recesses 28, with the beveled lips 3a of the pawls in operative contact with the ratch 22, and the stems 32 passed out through the bores of the handles, as indicated. Coil springs 35 encircle the stems 32 within the sockets 28 and are braced between the end walls of the sockets and the pawl sleeves and serve to throw the sleeves 31 inwardly. By pulling outwardly on the caps and turning the caps half way, the pawls 30 may be set for rotating the working head steadily in either direction with the pawls idling over the ratch on the reverse movement on the handles or by reversing the setting of the pawls against the ratch, the handles may he set rigid relative to the working head. This feature facilitates work in corners and difficult locations. The working head 21 is provided with a working face 2-36 which slopes outwardly towards the plane of the ratch 22 and imparts to the said face a convex effect. This face is sufficiently broad to support beading rolls of various sizes for beading various sized tubes, as will be shown. A plurality of heading rolls 37 are rotatively mounted on inclined pintles 38 which are journaled in spaced relation between the inner and outer concentric rings 39 and 40. Each beading roll is tapered, grooved and formed in a con- I ventional mannerv to turn the tube flange as required in the operation of the tool. This beading element, consisting of a cage made up of the rings 39 and 40 with. the rolls mounted therein, is slidingly mounted over the shaft 1 between the working head 21 and the shoulder 5 and hears upon the working face 36. In working upon various sized tubes, it is only necessary to insert a beading element having rolls of the required size. A thrust collar 11 having a ball race 42 therein, inwhich ball bearings 43 are arranged, is slidingly' mounted upon the shaft 1 next to the working head 21 and with the ball bearings engaging that head. A feed block 419 is provided having a threaded bore 44', whereby it is mounted upon the threaded portion 3 of the shaft, and this block is provided with handles 15 to facilitate rotation. The rear end of the shaft 1 is squared as shown at 16 to engage the wrench. If de sired, the plug 19 may be squared on its sides as shown at 17, and the inner surfaces of the jaws 11 formed with wide longitudinal grooves 48 for the travel of the plug, and to prevent the plug from turning laterally in the use of the tool.

In use, the jaws 11 are contracted as necessary for insertion in the tube, by gripping the squared end 46 with the wrench, and turning the shaft 1 so as to cause the plug 19 to travel outwardly on the shaft 1. By reverse rotation of the shaft 1, the jaws 11 are then caused to expand and grip the walls of the tube. The feed block 419 is then turned up, forcing the working head 21 and rolls 37 up against the end of the tube. By then rotating the head 21 by the handles 26 and at the same time keeping the block 49 turned up, the desired head or flange is rolled on the end of the tube.

I/Vhile I have herein described a certain specific manner and method of constructing and assembling the elements of my invention, it "is understood that I may vary from the same in minor details, not departing .from the spirit ofmv invention, so as best to construct a practical device-for the purpose intended, as defined in the appended claim.

I claim:

A device of the .kind described, comprising a shaft squared at one end constituting the handle end, screw threaded at the opposite working end, having a medial annular jaw bearing, and being screw threaded medially of the handle portion and the working end; a aw retaining ring fitted onto the working end. of the shaft, the said ring having a peripheral recess; a nut seated on the threaded extremity of the working end over the jaw retaining ring; two semi-cylindrical gripping jaws mounted on the working end of the shaft, the walls thereof being tapered from end to end, having inwardly directed stops at each end adapted to engage the medial jaw bearing and the peripheral recess of the jaw retaining ring respectively, and having circumferential grooves at each end; ring like coil springs seated in the said circumferential grooves; a tapered expanding plug having a threaded bore and mounted thereby upon the medial threads of the working end of the shaft with its tapered sides set complement-ally to the tapered walls of the gripping jaws; a working head slidingly and rotatively mounted on the handle end of the shaft adjacent the annular jaw bearing, the said head having a convexed working surface and having a circumferential ratch ;'a handle ring rotatively mounted over the said ratch, the same having handle sockets pierced through at the bottom thereof; working handles set in the handle sockets of the said ring, the handles having pawl sockets at their inner ends and having longitudinal bores from the sockets out through their outer ends; pawl sleeves slidingly and rotatively mounted in the pawl sockets of the handles; stems extended from the pawl sleeves out through the bores of the handles; caps mounted on the ends of the stems; spring set pawls within the said pawl sleeves; coil springs encircling the said stems of the pawl sleeves and braced to project the pawl sleeves outwardly; a cage of heading rings interposed on the shaft between the said annular aw bearing and the working head; a thrust collar with ball bearings mounted on the shaft next the working head; and a feed block having a threaded bore and mounted thereby upon the medial threads of the handle portion of the shaft.

In testimony whereof I afiix my signature.

EVERMONT BLEVINS MINER.

Witnesses CHRISTINE PETERSON, AL'roN ALLEN. 

